added a parameter with a default value to image_to_array() to give option of returning a 1D or 2D array
updated dostring for image_to_array()
added text_detection_hough.py - can find lines and return an images showing their location in the image
semi-functional, now detecting rectangles of text on test image
updated .gitignore
added a new test for image_to_arary()
moved code to only run as __main__
moved more code to the __main__ section
text_detection_hough.py can now find lines in text (with a suitably friendly input image)